[OpenLayers-Users] Small shift between google and wms

[Christopher Schmidt]

On Fri, May 22, 2009 at 08:19:49AM -0700, Simo D wrote:
> 
> Yes, for sure.  http://130.192.92.159/mapfish/prove/sdi_layout.html Ithaca
> sdi 
> Thanks

That's a relatively complex example. For example, it uses MapFish, which
introduces a number of potential issues. From what I can see, it appears
that resizing the page has the effect of fixing the problem -- with that
in mind, you might call map.updateSize() in a layerchanged listener to
work around your problem. To narrow down the problem more, I'd recommend
you create an example that is as simple as possible: see
http://openlayers.org/pipermail/users/2009-May/011865.html for some tips
on this process.

-- Chris

> Christopher Schmidt-2 wrote:
> > 
> > On Fri, May 22, 2009 at 08:07:03AM -0700, Simo D wrote:
> >> 
> >> I'm using a trunk version of the 2.8 checked out about three days ago.
> >> Shall I checkout a newer version?
> > 
> > No, i think any potential fix would be included in that. Do you have a
> > URL that people can see this at?
> > 
> >> 
> >> Christopher Schmidt-2 wrote:
> >> > 
> >> > On Fri, May 22, 2009 at 07:57:02AM -0700, Simo D wrote:
> >> >> 
> >> >> Hi, I created an application which retireves a WMS layer from
> >> geoserver
> >> >> (chached in epsg:900913), the layers from google and a layer from
> >> virtual
> >> >> earth plus some georss(GML+GeoRSS format). The issue is that when I
> >> >> switch
> >> >> from wms to google, there is a small shift of the map, so the georss
> >> are
> >> >> displayed in a wrong place. This shift disappears when zooming and is
> >> not
> >> >> present with virtual earth.
> >> > 
> >> > Are you using OL 2.8? A fix was checked into RC2 to fix this, I
> >> believe. 
> >> > 
> >> >> All the layers have the sphericalMercator set to true. Here follows a
> >> >> piece
> >> >> of my code:
> >> >> var options = {
> >> >> 		projection: new OpenLayers.Projection("EPSG:900913"),
> >> >> 		displayProjection: new OpenLayers.Projection("EPSG:900913"),
> >> >> 		units: "m",
> >> >> 		maxResolution: 156543.0339/4,
> >> >> 		maxExtent: new OpenLayers.Bounds(-20037508.34,
> >> >> -20037508.34,20037508.34,
> >> >> 20037508.34),
> >> >> 		restrictedExtent:  new OpenLayers.Bounds(-20037508.34,
> >> >> -20037508.34,20037508.34, 20037508.34),
> >> >> 		numZoomLevels: 10,
> >> >> 		zoom: 1, 
> >> >> 		controls: []
> >> >> 		};
> >> >> var world = new
> >> >>
> >> OpenLayers.Layer.WMS("WFP-SDI",geoweb,{layers:'ithaca_world',"sphericalMercator":
> >> >> true,format: 'image/png'});
> >> >> 	var gmap = new OpenLayers.Layer.Google("Google
> >> >> Streets",{'sphericalMercator': true,minZoomLevel: 2});
> >> >> 	var gphy = new OpenLayers.Layer.Google("Google Physical",{type:
> >> >> G_PHYSICAL_MAP,"sphericalMercator": true,minZoomLevel: 2});
> >> >> 	var gsat = new OpenLayers.Layer.Google("Google Satellite",{type:
> >> >> G_SATELLITE_MAP, 'sphericalMercator': true,minZoomLevel: 2});
> >> >> 	var vaer = new OpenLayers.Layer.VirtualEarth( "VE",{ minZoomLevel: 2,
> >> >> maxZoomLevel: 12, 'type': VEMapStyle.Aerial,'sphericalMercator':
> >> true});
> >> >> 
> >> >> 
> >> >> Have you got any advice?
> >> >> Thanks a lot.
> >> >> 
> >> >> Simone
> >> >> -- 
> >> >> View this message in context:
> >> >>
> >> http://n2.nabble.com/Small-shift-between-google-and-wms-tp2957923p2957923.html
> >> >> Sent from the OpenLayers Users mailing list archive at Nabble.com.
> >> >> 
> >> >> _______________________________________________
> >> >> Users mailing list
> >> >> Users at openlayers.org
> >> >> http://openlayers.org/mailman/listinfo/users
> >> > 
> >> > -- 
> >> > Christopher Schmidt
> >> > MetaCarta
> >> > _______________________________________________
> >> > Users mailing list
> >> > Users at openlayers.org
> >> > http://openlayers.org/mailman/listinfo/users
> >> > 
> >> > 
> >> 
> >> -- 
> >> View this message in context:
> >> http://n2.nabble.com/Small-shift-between-google-and-wms-tp2957923p2957979.html
> >> Sent from the OpenLayers Users mailing list archive at Nabble.com.
> >> 
> >> _______________________________________________
> >> Users mailing list
> >> Users at openlayers.org
> >> http://openlayers.org/mailman/listinfo/users
> > 
> > -- 
> > Christopher Schmidt
> > MetaCarta
> > _______________________________________________
> > Users mailing list
> > Users at openlayers.org
> > http://openlayers.org/mailman/listinfo/users
> > 
> > 
> 
> -- 
> View this message in context: http://n2.nabble.com/Small-shift-between-google-and-wms-tp2957923p2958054.html
> Sent from the OpenLayers Users mailing list archive at Nabble.com.
> 
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-- 
Christopher Schmidt
MetaCarta